How to route static files based on host?

[Yuki-Nagato]

IApplicationBuilder.UseStaticFiles only has a requestPath parameter, but I want to serve static files in different folder based on different host (domain).

For example:

https://static-a.example.com/ -> wwwroot-a/
https://static-b.example.com/ -> wwwroot-b/

[Tratcher]

You can do that with UseWhen.

app.UseWhen(context => context.Request.Host.Host.Equals("static-a.example.com", StringCompairison.OrdinalIgnoreCase), subApp => subApp.UseStaticFiles....);